00398nam a2200145Ia 450000500170000000800410001702000180005808200200007610000240009624500560012025000120017626000250018830000150021365000240022820250411112451.0231217s9999    xx            000 0 und d  a9788131725283  a001.642  STA;72  aStallings, William. 0aOperating systems : Internals and design principles  a6th ed.  c2009bPearsonaNoida  axviii, 822  aOperating,Internals